"Like a double dare" [gnomic verse]

Retaining credibility   while losing all one's hair?
                my whiskers wax whiter than snow
if aging has utility   it's like a double-dare
        as drops dare to merge with the flow

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Verse inspired by (and riffing on) a reading of George Packer's blog post, "Loose Thoughts on Youth and Age" [at NewYorker.com]